Crankshaft bearings for looms



4 Sheets-Sheet l Arme/'Mx E. F. BAHAN CRANKSHAFT BEARINGS FOR LOOMS Nov.18, 1952 Filed March 8,- 1949 Nov. 18, 1952 E. F. BAHAN 2,518,295

CRANKSHAFT BEARINGS FOB Loon/1s Filed March s, 1949 4 sheets-sheet 2Nov. 18, 1952 E. F. BAHAN 2,618,295

I `CRANKSl-IAFT BEARINGS FOR LOOMS Filed March 8, 1949 4 Sheets-Sheet 5Nov. 18, 1952 E. F. BAHAN l l2,618,295

CRANKSHAFT BEARINGS FOR Loon/1s 4 Sheets-Sheet 4 M, H om rm. R m f FiledMarch 8, 1949 Patented Nov. 18, 1952 i U'Nlreo sTATEfsf PATENT oel-loeThis invention relates to a loom and more'r especially to a mounting forthe crankshaft of thin-ja` loom and a girt associated therewith forlending;

rigidity to the side frames of the loom.

Looms usually have side frames connected together by an arch and `alsoconnected together by means of a breast beam and front and re lowergirts. A'Vcrankshaft is usually rotatab mounted on the yloom frames. 'Ihe cranksha t has a pair of crank throws and has pitman rd connectingthesame to swords which impat oscillation to the lay. The loom also hasa ca shaft with picker cams thereon for operating pick shafts forquickly moving the picker sticks to propel the shuttle across thevlay ofthe loom in a weaving operation. y v- Heretofore there have been variousmeans pr vided for mounting the crankshaft of the loo 4 and there havebeen additional strengthening and stiffening means extending crosswiseof .the loom immediately adjacent the crankshaft and being connected atopposite ends thereof to the proximate sides of the side frames.However, these girts have not proved satisfactory partienlarly due tothe difiiculty and the time and etici't required in properly alining thebearings mounted one'ach of the side frames of the loom for rotgat, ablysupporting opposite ends of the crankshaft.

Furthermore, during operation of the loom, the

the side frames of 'the loom and each of which provided with a' pair ofsemi-circular grooves disposed inexact alinement with each other andbetween which the vcranks adjacent each end of 4 Claims. (Cl.A 139-1)the'y crankshaft are-adapted -to pass and tofurther providev a pair ofbearing caps for each of the cast bearing units', having an invertedsemiwith the axis of the semi-circular bearing grooves in the castbearing unit, as a result of which the cast bearing units .at oppositeends of the loom are held in accurate alinement `with each other, thusinsuring that the bearing in which the crankshaft is mounted Will wear*evenly throughout their length and also servingto lend rigidity to theside frames of the loom to l`thereby permit the loom to be run atrelatively high speeds without any undue vibration. Thus `the productivecapacity of looms equipped with this improved mounting and the girt forthecrankshaft is greatly increased, and stoppages for re-alinement ofthe crank shaft bearings is eliminated.

Some of the objects of the 'invention having been stated, other objectswill appear as the description proceeds, when takenin connection withthe accompanying drawingsg'in which Figure 1 is a top plan view of aloom with parts in section andvshowing the improved girt with the castbearing units mounted thereon, but omitting the grease fittings;

Figure 2 is a vertical sectional yview taken substantially along theline 2 2 in Figure 1 and showing a'loom equipped with the new girt andone of the cast bearing units and with some of the usual parts of theloom being omitted, the grease fittings associated with the bearing unitbeing omitted;

Figure 3 is a vertical sectional view taken substantially along the line3--3 inFigure 2 showing yhow the supports for the center bearing blocksforfthe cam shaft are connected to the improved girt and showing thecast bearing .units at opposite ends thereof but omitting the greasettings;

Figure 4 is an exploded isometric view showing the cast bearing unit atthe right-hand side of Figures 1 and 3 removed from the loom and showingthe grease fittings in the bearing caps associated therewith; y

Figure 5 `is an enlarged vertical sectional View showing the manner inwhich the semi-circular bearing members are mounted in the castbearingunit and being taken substantially along the vline 5-5. in' Figure l,but omitting the loom. frame and the.cranksliaft;. f

amant mounted thereon from whence the warp is drawn` to a conventionalsand roll I and thus to a suit-v able cloth take-up mechanism', notshown. 'The n swords I3 oscillatably mounted at their lower ends on therocker shaft I1 and supporting 'a `-1ay .26

and a reed cap 2| on the upper end thereof. A A

suitable reed 22 is mounted between the lay "26 and the reed cap 2|.Sventionaloa-m shaft 24 having pickcams A25 xed# ly'fmoun'tedthereon'which lare `adapted to engagefthe usual pick arms, not shown,whi-'chare iristrurriental in proj ecting-theshuttla'not shown, acrosslthe upper .surfaces'ohthe lay. 4 ALoorns'u'of this type are `usuallyprovided with a pair fof 'spaced forwardly and rearwardly 'extendingmiddlegi'rts 21 whichare'connect'ed at their front and rear' ends to-thefront and rear girts I-2f-"ahd f3-,'respectively, `as byfbolts 30 andAthese middle girts i2 1"' support lconventional 'auxiliaryshaf-t'fbearing boxes v'32 in whichv the opposite ends o alconventionalauxiliary shaft 33 are rotatably "mounted -and"which usually`hasV the vconventional harness cams,fno`t shown,mounted thereon. AThisauxiliary-shaft .133.Jalso Ahas Aan vauxiliary shaft "gear 'Sx'edlymounted thereon 'which meshes with fan-idl`ergear -36 '(Figure 2) drivenby. alconventional harness 'change' `gear '31 liixedly mountedon'thelcam'shaft 24. I A

The-camshait 524 is rotatably mounted `in the usual "bearings V40"suitably secured to *opposite sides of the loom and the medial 'portionVo'f- -the cam sha-ft -24-is rotatably Amounted `in lbearing blocks' 4'2and '42. 'It maybe observed in 'Figure '3 'thatli'lhev bearing blockAY4,2 tis "secured as Iby bolts 44 (Figure 2) to a-lcen'ter bo'x bracket43. Parts associated with the bearing block 42' beingidentifcal A"toAparts"associated with the bearingblock 42fwil1-therefore-'bear likereference characters to the parts associated with the! bearing block'42-with'the prime rnotation added. t

center box 'bracket v43, atv-the "right-hand bearingv block `42 andhas'an oil -set ldownwardly extendingportion '146 integral therewith Vtheleft- `hand-surface of which-engages the right-lf1arid middle girt 21and the right-hand surface (Figure 73)* of :which engages' afoot'jmember41;,` the llojwerendoiwhich visadaptedto rest on thelioor whichsupports'the' loom. The-ffoot-member 4 1 has'a projection E5i] integraltherewithmwhichis penetra-ted alver'tically vdisposed adjustment screw 5I which :engages-the -lower edge of' the 'downwardly i'projectingportion f46 integral with fthe-'center' box bracket 43 vfor verticaladjustment of thefcenterboxbracket 4-3 -`so the-"'uppe'rsurface ofanAL-shaped bracket 5-2,2securet i tothe upper portion of the center boxbracket-"'43-A as by'bolts 53, vmay engage a transverse girtAArnemberSS. which isa `part 4of thepresent' invention and will te''later aescribedrin detail. y

` It maybe observed Figure Y2z that the 'down wardly `projectingportion461 of the "center box bracket 43 has vertical adjustmentslots"51'there'' The loom also has a con- 4 in which are adapted to beslidably penetrated by bolts 66 which also slidably penetrate thevertical portion of the middle girt 21 and the foot member 41 has slotstherein which coincide with the slots 51 in the portion 46 of the centerbox bracket 43 and which are also penetrated by the bolt 66 to thussecure the center box bracket 43 and the foot member 41 to the middlegirt mem-y ber 21 after the center box bracket 43 and the footrrnernjberj'lil''have been adjusted relative to each other by theadjustment screw 5 I.

'Referring to Figure 1 it may be observed that l the girt 55 has yaplurality of spaced longitudinally yextendingslots 65. therein, some ofwhich are adapted to be slidably penetrated by bolts 63 and 63 Vforsecuring the brackets 52 and 52', respectively, ztothetransverse girt55.

rPhe transverse girt 55 is secured at opposite lends'thereof as by bolts64 and 64' to inwardly extending underlapping portions 65 and 65' respectively, of cast bearing vunits broadly designated at '10 and 16',respectively, `to lbe 'later described in detail. The 'cast bearinglunits 10 Iand 10 rotatably support a conventional crank shaft V'H in amanner to be later described. The crank shaf-t- 1I has'cran'k throws -12and 12' integral therewith vto which one AendY vof pitman rods 13 andi132 respectively, are pivotally connected, their fotherfends beingpivotally connectedto the swordsIB. 'It might be statedl that the'loomalso has :a suitable'arch ibarl which is ,secured at leach end thereofto the side frames of the loom'by vany suitable mea-ns such as bolts 16;

l-Ie'retofore, in many looms, the crankshaft 1I of the-loom has beenmounted in suitable'bear ings disposed in the top portionsof'theside'rame I0 and 'I-'I Usually there isprovided with looms o'fthis 'type a single vbearing which is disposed'on the lremote side ofthevcrank throws 12 and 12' Vand therefore there l"wasnothing to supportthe middleportion 'of thejcrank'shaft 'and this resulted invibrations'in the crankshaft thus vmaking A'it impossible to yspeed `upthe pcksper kminute of 'the loom.4 'In special instances, there havebeen 'provided rcast members vhaving kremovable bearf ings 'securedthereto, thereA being 'one of lthese bearings disposed adjacent each'side of each oi thecrank throws 12 and-12 of thecranks'haft 111i.Howeveigdue tothe fact thatthese bearingso'have `been removable `fromthecast memben'therejhas been nojway "by Lwhich 'the bearings .could fbefaccuratelyalined longitudinally of the crankshaft.

of 'the'loom'with the result'that the bearings may vbecome worn unevenlythroughout'their length, orinsomeinstances; may 'cause ridges orcircular grooves 'in the 'crankshatl Ythus requiring Y,ref placementofthe removablebearings or. the craiikf shaft or both vafter 'fbearingsof this' type fhave been ins'tallecl`tfor a; 'relatively-short length of time; AYL 'Ifh'e 'cast'beari'ng .unit TU Iatthe left-ih'and's'idc ofFigures 'l'iand 3 being identical `togthe cast bearing unit 1U1'atthe'right-handside of Figu$ lgzand fsywiththe exception lof beingopposite hand,'fonly"the'oast .bearing'uit 10 appearingatftheriglit-"han'd sidedffFgures 1 and? w`i11 'be describedflik'e partson'the v'cast bearing llunit I'li' bearing like -reference characters tothosega'ppe'aring on" the cast bearing unit '1IJ' with .the primenotation added. IReferring tov Figures `3 A,and 4 i-t may. loe-.ob-4served that' the cast bearing .unit -1'0 Vhas afver-f tically disposed'forwardly :and rearwar'dlyy extending portlon '8D .having ,a1plurali-ty of irregu-l 'l'arly `spaced holes V'o'r slots 7ftherein-which are -tegral with the side frame member I adapted to be slidablypenetrated by bolts 82 for securing the cast bearing unit 'I0 to theinner 'ver-tical surface of the side frame I0. The cast bearing unit l0'is, of course, secured tothe inner vertical surface of the side frame Iin like manner. Disposed above the vertically disposed portion 80 andextending outwardly therefrom is an integral bearing block portion 83the lower surface of which is machined accurately for mounting on anoutwardly projecting portion 84 which is an integral part of theconventional side frame -member I0, there being a similar portion 84 in-There are many models-of looms which are not provided with the outwardlyprojecting portions 84 and 84' shown on the remote sides of the framemembers I and in Figure 3. In this case, the bearing portions 83` and 83merely extend outwardly beyond the remote surfaces of fthe side frames|0and Spaced apart from the bearing block portion 83-is ya secondbearing block portion 86 having a vertical end wall 81 remote from thebearing block portion 83. The bearing block portions 83 and 86 have.alined semi-circular grooves 90 land 9| cut in their upper surfaceswhich are machined to accuratelyreceive semi-circular concavo-convexlongitudinally extending bearing members 92 and 93, respectively. Figure5 shows the manner in which the bearing member 92 is mounted in thebearing block-83 to prevent end wise movement of Vthe semi-circularbearing member 92. The semi-circular bearing 493 is mounted in thebearing block portion 86 in an identical manner and a showing of thesame is not deemed necessary. It will be noted in Figure that thebearing block portion 83 has a locking member 85 of soft metal, such asbronze orvthe like snugly mounted therein which has a restricted portion88 projecting upwardly ltherefrom. The vertical length of the portion 88is less lthan the thickness of the bearing member 92 and the memberl92Vis provided with a bore 96 which is adapted `to be slidably penetratedby the portion 88 whenthe `member 92 is placed in the. semi-circulargroove 90 to thus prevent endwise movement of the member 92 in thebearing block portion83. The upper edges of the bearing members 92 and93Yare machined accurately ontheir respective axes and it may beobserved in Figure 4 that the bearing block portions 83 and 86 areprovided with longitudinally extending right angularly cut grooves 94and 95, respectively, whose top surfaces are disposed in a horizontalplane coinciding with the raxes of the bearing members ,92 and 9.3,there being one of the grooves 94 and 95 `at each side of the bear'- ingmembers 92 and `93, respectively, :the purpose of which will be laterdescribed.

The underlapping portion 65 at the inner side of the cast bearing unithas .a longitudinally extending keyway |00 out therein which is machinedin accurate parallel relation tothe axes .of the bearing members -92 and93 and is adapted to Aslidably receive a key IUI. Opposite ends of lthegir-t member 55 are provided with longitudinally extending keyways |02and |02' which are machined in accurate parallel alinement with eachother and are cut in the lower surfaces of the end portions of the girt55 and which are .adapted to slidably receive the key |0| when thelapping por-tion l65 is provided with a plurality of bores |03 rand theoverlapping portion of the girt is provided with slots or openings |04which coincide with the bores |03 in the underlapping portions 65 forslidable reception of the bolts 64,- heretofore described, which secure:the girt member 55 :to the cast bearing unitA l0. It may be noted inlFigures 4 and 6 that the ends of the gir-|5555 are provided with spacedpads |05, the vertical ends of which may be filed off when the girtV55'and the cast bearing units 'I0 and 'I0' are applied to looms whoseside frames I0 and are not far enough .apart from each other toaccommodate the girt 55 in its original length.

The cast bearing unit 10 (Figure 4) has an irregluarly curved portion|06 which extends between the bearing block por-tion 86 and thevertically disposed portion 80 and it also has a rear verticallydisposed wall portion |01 which 'extends between the rear portions ofthe bearing block portions -l 83 and 86 and extends downwardly and iscurved inwardly as .at |08 to lend rigidity thereto at its juncture withthe veritically disposed portion 80. It is thus seen that the portions80, 83,86, |016 and |01 define an openingv |09 through which the crankthrow l2 is adapted to pass. e It will bev noted in Figure 4 that thecast bearing unit -|0 has horizontally disposed portions lll'and ||2adjacent .the rear wall por-tion |01 and which'are provided with slots||3 and ||4, respectively for supporting other conventional parts of theloom, not shown, such as the warp stop motion which is no-t pertinent tothe present invention and, consequently, is not shown in the drawings. j

The upper surfaces of the bearing block portions 83 and 86 are machinedaccurately for reception of semi-circular caps ||6 and respectively,1whose lower surfaces are also ma'- chined; "The bearing caps ||6 and areprovided with longitudinally extending inverted semi-circular grooves|20 and |2I, respectively,

which are milled for accurate reception of longitudinally extendingsemi-circular bearing members |22 and |23, respectively, which coincidewith the semi-circular bearing members 92 and 93 in the bearing blockmembers 83 and 8 6, krespectively. It will be notedv that the bearingcaps ||6 and are provided with longitudinally ex tending ridges |25 and|26, respectively, there being one of these ridges adjacent each side ofthe semi-circular grooves |20 and |2I,y respectively, and which areaccurately machined parallel to and in the same horizontal plane as theaxis of the semi-circular bearing members |22 and |23, so they may seataccurately in the cofinciding grooves 94 and 95 in the bearing blockportions 83 and 86, respectively, thus insuring that the parts, whenassembled, may be accurately alined.

The bearing blocks ||6 and ||`I are provided with outwardly projectingtab portions or flanges |30 and |3I, respectively, at each side thereof,each of which has a hole |33 therein, the bearing block portions 83 and86 each having vertically extending bores |34 therein, there being oneof these bores |34 adjacent each side of the semicircular bearingportions 92 and 93. The bores |34 coincide with the holes |33 in thebearing caps ||6 and ||'I. The holes |33 in the bearing cap ||6 and theholes |34 in the bearing block portion 83 are adapted to be slidablypenetrated by bolts |40 for securing the bearing block portion 83 of thecast bearing unit I0 to the out not` provided Vwith the projectionsll`and B4.

Itis-manifest that `the bolts |40 Vwould then serve only-to secure the'cap |76 tothe bearing block portion-83.

Bolts -|4| .slidably penetrate the -holes 133 in .thebearing cap |11 andthe .bores |34 inthe bearingvblock portions Bof the cast bearingunit 10`to thus secure the bearing cap on the bearing block portion 86. Y.

ReferringtofFigures and '1, it maybe observed that-the vsemi-circularbearing member i22 is mounted .in the groove V|211 of' bearing cap||6zin amanner similar to that in which the' bearing member 92 ismounted in the block portion1183.

A .locking member |43 of .soft metaLsuch :bronze or thelike, `is snuglymounted in the cap U6 and has a. restrictedportion |44 projectingl,vziownvvardly therefrom. The 'vertical length of .the portion |44 islessthan the thickness of the semi-.circular bearing member |22 and themem- Y,ber `|22 is provided with a bore |45 which is ,adapted to beslidably penetrated Vby the portion |44 to prevent endwise movementof`the bearing member |22 inzthe capvl I6 when assembled. The

4bearing cap has a suitable .grease fitting |46- :threadably mountedtherein and has a bore |47 .therein which extends between the greasefitting .andthe-locking member |43. The lockingmemberl43 has a hole |50therein -through whichthe lubricant vmay pass from the bore .|41 intothe larea defined by the semi-circular .bearing member |22. The bearingmember l|23 is mounted `.in the lcap. ||1 in a manner identical to thatshown for the bearing member 1|22and a, further description o f the sameisnotdeemed necessary. The grease fitting associated with cap isindicated at |5| in Figure 4. The locking members 85 `and |43 alsoprevent lthe .semi-.circular bearing membersf92 and |22 from rotatingwith the crankshaft 1|. y

In order to insure the desiredY relationship bevtween the variousmachined surfaces on the cast bearingunit 10, a description of themanner in .which the various surfaces are machined isbe- .lieved to bein-order. -The initial surfac'ev'tol be machined is'the vertical side ofportion 8|) which is adapted to engagethe inner side of the sideframe'member |-0. The cast-bearing unit 'i0 is then placed in a suitablejig and ther upper surf lface vof the lunderlapped portion 65 is ma-`-cured to the upperv surfaces of thebearing Lblock portions 83 and inthe-manner described, after v.which the semi-circular grooves and-B ,in.the cast bearing .unit 10 and-the semi-circular grooves |20 and |2| inthe bearingcaps H6 and. iliare machined simultaneously'by the-useV ofa.single `cutting tool, -the axis of whichiwouldbe parallel 'tothesurfaces :83 and' 86 a :horizontal plane and parallel to the-.keyway|00. rin :a .horizontal plane. f .j

It has already been stated how the -endsof the girt members .55 v arevmachined and itis thus seen that accurate alinement of the bearingsurfaces in .the cast bearing 'l0 .with the girt members 55Vand-'vviththe lbearing surfaces in thevotherzof the cast -bearing'units10' may loe-insured. It thus seen that I have provided a com'- .binationgirt and crankshaft mounting for a loom comprising castbearing units towhich .the

girt may be .removably secured before securing the cast bearing unitstothe side frame members v.of the loom and the cast bearing unitsh-aving.bearings therein for rotatably supporting the crankshaft atoppositefsides of eachfofthe crank throws. Means are vfurther providedwhereby accurate alnement of the various parts may :be .insureduponthese parts being assembledand the girt, of course, tends to lessenvibration caused by the various driven parts of tberloom.

yIn the drawings and specification there has been set tforth aypreferred `embodiment of the in'- vention, and although specific termsare rem vPlytiji, .they are used lin a lgeneric and descriptive senseonly, Aand notfor purposes of limitation, the scope-of the. inventionlbeing defined in the claims.

.rc1-aim:

.1. In a loom havingside frames and also hav.- ing .a crankshaft, .thesaid crankshaft having .a pair .of crank vthrows thereon, means forrotatably -mounting theV crankshaft between ...the side frames of theloom comprising a pair .of 4cast bearing units adapted .to be secured tothe 'proximate surfaces of the side framesfthe cast beariingunits beingprovided with semi-circular bearing surfaces milled in their lupperextremities. said bearing surfaces being-disposed on thesame axis andbeing adapted tofrotatably receivethe `crankshaft on yeachsde ofthecrankthrows. bearngcaps removably securedto the upper surfaces of thecast bearing units andh-avingbear# ing .surfaces attheirlowerextremities adapted Vto .coincide `with the bearing' surfaces intheupper extremities of the cast bearing units, theproximateends of thesaid cast bearing units having inwardly .projecting .portions integraltherewith, each of the invrardly'projecting. portions being `providedwith a keyway, a key adapted to `be slid'- ably mounted in the keyway, agirt adapted .to 'be secured at each end thereof to the upper surfacesof .the inwardly projecting vportions of the cast bearing-units,saidgirt having a keywayj'a't each end thereof disposed in coincidingrelationwith the keyways in the inwardly projecting lportions of thecast bearing units -and being ladapted 'to slidably receive the upperportion of the correspending keys,.said vkeyvvays in theinwardlyprojecting portions of Athejeast bearing and in the oppositeends of .the girtvbein'g cut in accuratealinement withveach other tothus insure `accurate alinementof the cast 'bearing units with respectto each other. -1

2. .In alecm having Vside'frame members, 'each vof said side framemembers .liavingan outwardly :theysaid .crankshaft comprising a pair of.cast

`bearing units, each Vof said cast bearing units .comprising a verticalportion, .an outwardly extending bearing block portion integral withthe75 vertical portion vand having@ semi#circularbearing cavity milledtherein, the lower surface of the outwardly extending bearing portionbeing machined and being adapted to rest on the outwardly projectingportion of the side frame of the loom, a cast bearing block portionspaced inwardly from the first-named bearing block portion and alsobeing integral with the cast bearing unit and having a semi-circularbearing milled therein whose axis is in alinement with the othersemi-circular bearing cavity, each of said cast bearing units having afront portion and a rear wall portion integral therewith spanning thedistance between the first named and second named bearing block portionsand defining an opening through which the crank throw at the adjacentend of the crankshaft is adapted to pass, bearing caps removably securedto the upper surfaces of each of the said bearing block portions to formthe upper halves of bearings for rotatably supporting the crankshaft,means for lending rigidity to the side frame members of the loom incooperation with the means for rotatably supporting the crankshaftcomprising a girt member, underlapping portions at the proximate sidesof the cast bearing units, said underlapping portions being adapted tounderlap the opposite ends of the girt member, said underlappingportions each having a key extending longitudinally thereof and in exactalinement with each other, the overlapping ends of the girt member eachbeing provided with a keyway, said keyways in the end of the girt beingmachined in accurate alinement with each other and being adapted toslidably receive the said key in the underlapping portions and means forsecuring the overlapping ends of the girt to the underlapping portionsof the cast bearing unit, said keys in the underlapping portions of thecast bearing units being machined in parallel alinement with the axis ofthe bearing surfaces in each of the cast bearing units thus insuringthat both of the cast bearing units and the girt shall be in accuratealinement with respect to each other.

3. In a loom having side frames and a crankshaft and said crankshafthaving a crank throw near each end thereof, means for rotatably mountingthe crankshaft in the loom comprising a pair of cast bearing unitsadapted to be secured to the proximate surfaces of the side frames, eachof said cast bearing units having a pair of spaced bearing blockportions cast integral therewith, each of said bearing block portionshaving a semi-circular groove milled therein, the axes of the saidsemi-circular grooves being in alinement with each other, said bearingblock portions being adapted to rotatably support the crankshaftadjacent opposite sides of the crank throws, semi-circular bearing capsadapted to be secured to the upper surfaces of the bearing blockportions to form the upper half of the bearing for rotatably supportingthe crankshaft, a rigid member having its ends secured to the proximatesides of the cast bearing units and spanning the distance therebetween,the connection between the ends of the girt and the cast bearing unitscomprising a key and keyway extending longitudinally of the girt andbearing units.

4. In a loom having side frames and a crankshaft and said crankshafthaving a crank throw near each end thereof,l means for rotatablymounting the crankshaft in the loom comprising a pair of cast bearingunits adapted to be secured to the proximate surfaces of the sideframes, each of said cast bearing units having a pair of spaced bearingblock portions cast integral therewith, each of said bearing blockportions having a semi-circular groove therein, the axes of the saidsemi-circular grooves being in alinement with each other, said bearingblock portions being adapted to rotatably support the crankshaftadjacent opposite sides of the crank throws, semi-circular bearing capsadapted to be secured to the upper surfaces of the bearing blockportions to form the upper half of the bearing for rotatably supportingthe crankshaft, a rigid member having its ends secured to the proximatesides of the cast bearing units by a key and keyway connection andspanning the distance therey between and holding all of the bearinggrooves in both of the bearing block portions in a straight line.

EDWARD F. BAHAN.

REFERENCES CITED rIChe following references are of record in the file ofthis patent:

UNITED STATES PATENTS

